CN113930275B - Lubricating oil for oil-cooled motor hybrid power reduction gearbox and application thereof - Google Patents

Lubricating oil for oil-cooled motor hybrid power reduction gearbox and application thereof Download PDF

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CN113930275B
CN113930275B CN202010677260.8A CN202010677260A CN113930275B CN 113930275 B CN113930275 B CN 113930275B CN 202010677260 A CN202010677260 A CN 202010677260A CN 113930275 B CN113930275 B CN 113930275B
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lubricating oil
oil
phosphorus
weight
containing antiwear
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CN113930275A (en
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王宁
文彦龙
周轶
于宏涛
张国茹
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China Petroleum and Chemical Corp
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China Petroleum and Chemical Corp
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    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
    • C10M169/04—Mixtures of base-materials and additives
    • C10M169/044—Mixtures of base-materials and additives the additives being a mixture of non-macromolecular and macromolecular compounds
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
    • C10M169/04—Mixtures of base-materials and additives
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
    • C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
    • C10M2203/1006—Petroleum or coal fractions, e.g. tars, solvents, bitumen used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
    • C10M2205/003—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
    • C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
    • C10M2205/028—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers containing aliphatic monomers having more than four carbon atoms
    • C10M2205/0285—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers containing aliphatic monomers having more than four carbon atoms used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/02—Hydroxy compounds
    • C10M2207/023—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings
    • C—CHEMISTRY; METALLURGY
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    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/10—Carboxylix acids; Neutral salts thereof
    • C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M2207/125—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids
    • C10M2207/127—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids polycarboxylic
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/08—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a carboxyl radical, e.g. acrylate type
    • C10M2209/084—Acrylate; Methacrylate
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
    • C10M2215/04—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
    • C10M2215/06—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to carbon atoms of six-membered aromatic rings
    • C10M2215/064—Di- and triaryl amines
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/22—Heterocyclic nitrogen compounds
    • C10M2215/223—Five-membered rings containing nitrogen and carbon only
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/04—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions containing sulfur-to-oxygen bonds, i.e. sulfones, sulfoxides
    • C10M2219/044—Sulfonic acids, Derivatives thereof, e.g. neutral salts
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/08—Thiols; Sulfides; Polysulfides; Mercaptals
    • C10M2219/082—Thiols; Sulfides; Polysulfides; Mercaptals containing sulfur atoms bound to acyclic or cycloaliphatic carbon atoms
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
    • C10M2223/04—Phosphate esters
    • C10M2223/045—Metal containing thio derivatives
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
    • C10M2223/04—Phosphate esters
    • C10M2223/047—Thioderivatives not containing metallic elements
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
    • C10M2223/049—Phosphite
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2227/00—Organic non-macromolecular compounds containing atoms of elements not provided for in groups C10M2203/00, C10M2207/00, C10M2211/00, C10M2215/00, C10M2219/00 or C10M2223/00 as ingredients in lubricant compositions
    • C10M2227/06—Organic compounds derived from inorganic acids or metal salts
    • C10M2227/061—Esters derived from boron
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
    • C10M2229/04—Siloxanes with specific structure
    • C10M2229/041—Siloxanes with specific structure containing aliphatic substituents

Abstract

The invention belongs to the technical field of lubricating oil, and particularly relates to lubricating oil for an oil-cooled motor hybrid power reduction gearbox and application of the lubricating oil. The lubricating oil comprises the following components in percentage by weight: alkyl polysulfide, a phosphorus-containing antiwear agent, a viscosity index improver, a pour point depressant, a detergent dispersant, an antioxidant, an antirust agent, a metal deactivator, an antifoaming agent, hydrogenated base oil and the balance of synthetic oil; wherein the alkyl polysulfide is polyalkylbenzyl sulfide T324; the phosphorus-containing antiwear agent is selected from zinc dialkyl dithiophosphate T204, thiophosphate Irgalube353 and phosphite T304; the hydrogenated base oil is a group III hydrogenated base oil; the synthetic oil is poly-alpha-olefin synthetic oil; the viscosity index improver is polymethacrylate. The lubricating oil has the advantages of low viscosity, good compatibility with copper parts and low metal corrosion.

Description

Lubricating oil for oil-cooled motor hybrid power reduction gearbox and application thereof
Technical Field
The invention belongs to the technical field of lubricating oil, and particularly relates to lubricating oil for an oil-cooled motor hybrid power reduction gearbox and application thereof.
Background
To further increase the contribution to fuel economy, more and more companies are selecting hybrid transmissions to replace traditional manual and automatic transmissions. Hybrid power gearboxes have a wide variety of technical routes, and oil-cooled motors are favored because of their high energy density.
After the hybrid power gearbox is embedded into the motor, lubricating oil is needed to lubricate and cool the motor stator, the motor rotor and other parts, and meanwhile, the compatibility of the lubricating oil with an electric control unit and a motor conductive copper bar is also needed to be considered. However, the activity of sulfur and phosphorus components in the conventional gear oil is high, and the requirement of high extreme pressure wear resistance is met, but after the gear oil is used for a long time, the active components in the lubricating oil and copper are easy to generate chemical reaction, and copper parts in a motor are easy to lose efficacy, so that the motor is ineffective or damaged, and the safety of the whole vehicle is seriously threatened.
CN103374452A discloses a manual transmission lubricating oil composition which has good compatibility with copper parts and low metal corrosion. However, the hybrid power reduction gearbox of the oil-cooled motor has the characteristics of high rotating speed, exposed copper wires of the motor and direct contact of lubricating oil and motor materials, and has obviously different lubricating requirements with a manual gearbox, so that when the lubricating oil is used for the hybrid power reduction gearbox of the oil-cooled motor, the problems of relatively high viscosity, poor compatibility with copper parts, relatively high metal corrosivity, easy motor electric leakage and the like exist.
Disclosure of Invention
In order to overcome the defects, the invention provides lubricating oil for an oil-cooled motor hybrid power reduction gearbox. The lubricating oil has the advantages of low viscosity, good compatibility with copper parts, low metal corrosion and difficult electric leakage of the motor.
The lubricating oil provided by the invention comprises the following components in percentage by weight:
Figure BDA0002584505430000011
Figure BDA0002584505430000021
wherein the alkyl polysulfide is polyalkylbenzyl sulfide T324;
the phosphorus-containing antiwear agent is selected from zinc dialkyl dithiophosphate T204, thiophosphate Irgalube353 and phosphite T304;
the hydrogenated base oil is a group III hydrogenated base oil; the synthetic oil is poly-alpha-olefin synthetic oil;
the viscosity index improver is polymethacrylate.
In the preparation and development of lubricating oil, alkyl polysulfide polyalkyl benzyl sulfide T324 is usually added to improve the extreme pressure performance of the lubricating oil, but the lubricating oil also has the defects of higher kinematic viscosity, stronger activity of sulfur-containing compounds and easy rapid reaction of metals such as brass and the like, and the copper metal content in the oil is higher after a copper sheet soaking test, so that besides the addition of alkyl polysulfide to the lubricating oil, other components also need to be adjusted in a matching way to obtain the lubricating oil with better comprehensive performance.
The research of the invention finds that when the polyalkylbenzyl sulfide T324 is used as alkyl polysulfide, the group III hydrogenated base oil and the poly-alpha-olefin synthetic oil are used as the base oil, the combination of the dialkyl dithiophosphate T204, the thiophosphate Irgalube353 and the phosphite ester T304 is used as the phosphorus-containing antiwear agent, and the polymethacrylate is used as the viscosity index improver, so that the lubricating oil obtained by combining the components in a specific proportion has the advantages of relatively lower viscosity, better compatibility with copper components, relatively lower metal corrosivity, difficult electric leakage of a motor and better comprehensive performance.
Preferably, the alkyl polysulfide accounts for 1.6 to 2.5%, more preferably 1.6 to 2.0%, and still more preferably 1.8 to 2% of the total mass of the lubricating oil.
Preferably, the phosphorus-containing antiwear agent accounts for 1.3-1.7%, and more preferably 1.3-1.5% of the total mass of the lubricating oil.
According to some embodiments of the invention, in the lubricating oil, the mass ratio of the polyalkylbenzyl sulfide T324 to the phosphorus-containing antiwear agent is (1.6-2.0): (1.3-1.7); preferably (1.8 to 2.0): (1.3-1.7).
Further preferably, in the lubricating oil, the mass ratio of the alkyl polysulfide to the zinc dialkyldithiophosphate T204, the phosphorothioate irgaliube 353, and the phosphite T304 is (1.6 to 2.5): (0.7-0.9): (0.2-0.6): (0.2-0.4). Preferably (1.8 to 2.0): (0.7-0.9): (0.2-0.3): (0.2-0.4).
According to the invention, through the blending of the contents of the components, the viscosity grade of the obtained lubricating oil is 75W.
The invention further defines the specific selection of each component.
The viscosity index improver is preferably polymethacrylate with the molecular weight of 10000-40000, and is further preferably polymethacrylate with the molecular weight of 40000.
The pour point depressant is preferably a polymethacrylate pour point depressant Vx-1-248.
The detergent dispersant is preferably boronated succinimide and/or synthetic calcium sulfonate.
The antioxidant is preferably a dialkyl diphenylamine and/or a phenolic antioxidant.
The rust inhibitor is preferably dodecenyl succinic acid and/or barium dinonyl naphthalene sulfonate.
The metal deactivator is preferably a benzotriazole fatty amine salt.
The antifoaming agent is preferably polymethylsilicone oil and/or a copolymer of an acrylate and an ether.
As a preferable scheme of the invention, the lubricating oil consists of the following components in percentage by weight:
Figure BDA0002584505430000031
further preferably, the lubricating oil consists of the following components in percentage by weight:
Figure BDA0002584505430000041
although the components of the lubricating oil described in the present application are common in the art, those skilled in the art know that the comprehensive performance of the lubricating oil can be affected by fine adjustment of the types or the amounts of the additives; in actual formulation, technicians often lose the consideration of the oil, and it is difficult to obtain a formulated oil composition with all properties. Compared with the prior art, the invention has the substantial contribution that through a large number of tests, a blending formula which can simultaneously meet the excellent comprehensive performances of low viscosity, strong extreme pressure abrasion resistance, strong stability, low metal corrosion and the like is found, so that the optimal synergistic effect is realized.
The lubricating oil can be prepared by adopting a conventional lubricating oil blending method. The method comprises the following specific steps: mixing the components according to the proportion in an Automatic Batch Blending (ABB) or synchronous dose blending (SMB) mode, and stirring for 0.5-3 hours at the temperature of 25-55 ℃ to obtain the composition; wherein the order of addition of the components is not particularly limited.
The invention also provides application of the lubricating oil in an oil-cooled motor hybrid power reduction gearbox.
The beneficial effects obtained by the invention are as follows:
application experiments prove that the lubricating oil provided by the invention can reduce the metal corrosivity of the oil-cooled motor reduction gearbox oil to a greater extent, meets the special requirements of customers on the compatibility of copper parts of the low-viscosity oil-cooled motor reduction gearbox oil, and has the advantages of strong stability, good extreme pressure wear resistance and excellent comprehensive performance. Meanwhile, the lubricating oil provided by the invention has the advantages of simple components, easily obtained raw materials, simple and convenient preparation method, low cost and wide large-scale application prospect.
Detailed Description
The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention. Unless otherwise specified, the reagents used in the examples are all conventional commercially available reagents, and the technical means used in the examples are conventional means well known to those skilled in the art.
The examples and the comparative examples were prepared according to the following steps: mixing the components according to the proportion, and stirring for 1 hour at 40 ℃ to obtain the lubricating oil composition.
Example 1
A lubricating oil for an oil-cooled motor hybrid power reduction gearbox comprises the following components:
TABLE 1
Composition (I) Content (wt%)
Polymethacrylate viscosity index improver with molecular weight of 40000 8
Polymethacrylate pour point depressant Vx-1-248 0.5
Zinc dialkyldithiophosphate T204 0.8
Thiophosphate Irgalube353 0.2
Phosphite T304 0.3
Multi-alkyl benzyl sulfide T324 1.9
Benzotriazole fatty amine salt T406 0.05
Boronized succinimide T154B 0.2
Synthetic calcium sulfonate T104 0.1
Dialkyl diphenylamine Irganox L57 0.2
Liquid mixed type shielding phenol Irganox L135 0.3
Dodecenylsuccinic acid T746 0.05
Barium dinonyl naphthalene sulfonate T705 0.05
Polymethyl silicone oil T901 0.001
Acrylate and Ether copolymer T912 0.001
Group III hydrorefined base oils Balance of
Example 2
A lubricating oil for an oil-cooled motor hybrid power reduction gearbox comprises the following components:
TABLE 2
Composition (I) Content (wt%)
Polymethacrylate viscosity index improver with molecular weight of 40000 5
Polymethacrylate viscosity index improver with molecular weight of 20000 2
Polymethacrylate pour point depressant Vx-1-248 0.5
Zinc dialkyldithiophosphate T204 0.8
Thiophosphate Irgalube353 0.6
Phosphite T304 0.3
Multi-alkyl benzyl sulfide T324 1.6
Benzotriazole fatty amine salt T406 0.05
Boronized succinimide T154B 0.2
Synthetic calcium sulfonate T104 0.1
Dialkyl diphenylamine Irganox L57 0.2
Liquid mixed type shielding phenol Irganox L135 0.3
Dodecenylsuccinic acid T746 0.05
Barium dinonylnaphthalenesulfonate T705 0.05
Acrylate and Ether copolymer T912 0.001
Group III hydrofined base oil Balance of
Example 3
The difference between the lubricating oil for the hybrid reduction gearbox of the oil-cooled motor and the embodiment 1 is that 1.8g of alkyl polysulfide polyalkylbenzyl sulfide T324 and 1.7g of phosphorus-containing antiwear agent (the proportions of the components are the same as those in the embodiment 1).
Example 4
The difference between the lubricating oil for the oil-cooled motor hybrid power reduction gearbox and the lubricating oil in the embodiment 2 is that 1.8g of alkyl polysulfide polyalkylbenzyl sulfide T324 and 1.7g of phosphorus-containing antiwear agent (the proportions of the components are the same as those in the embodiment 1).
Example 5
A lubricating oil for an oil-cooled motor hybrid power reduction gearbox comprises the following components:
TABLE 3
Composition (I) Content (wt%)
Polymethacrylate viscosity index improver with molecular weight of 40000 6
Polymethacrylate pour point depressant Vx-1-248 0.5
Zinc dialkyldithiophosphate T204 0.8
Thiophosphate Irgalube353 0.2
Phosphite T304 0.3
Multi-alkyl benzyl sulfide T324 1.9
Benzotriazole fatty amine salt T406 0.05
Boronized succinimide T154B 0.2
Synthetic calcium sulfonate T104 0.1
Dialkyl diphenylamine Irganox L57 0.2
Liquid mixed type shielding phenol Irganox L135 0.3
Dodecenylsuccinic acid T746 0.05
Barium dinonyl naphthalene sulfonate T705 0.05
Polymethyl silicone oil T901 0.001
Acrylate and Ether copolymer T912 0.001
Poly a-olefin synthetic oil PAO6 10
Group III hydrorefined base oils Allowance of
Example 6
A lubricating oil for an oil-cooled motor hybrid power reduction gearbox comprises the following components:
TABLE 4
Figure BDA0002584505430000071
Figure BDA0002584505430000081
Comparative example 1
The lubricating oil for the oil-cooled motor hybrid reduction gearbox is different from the lubricating oil in embodiment 1 in that: alkyl polysulfide, phosphorus-containing antiwear agent was replaced with sulfurized isobutylene, and its addition amount was 3.5g.
Comparative example 2
A lubricating oil for an oil-cooled motor hybrid reduction gearbox is different from that of embodiment 2 in that: alkyl polysulfide, phosphorus-containing antiwear agent were replaced with sulfurized olefin, and the amount added was 3.3g.
Comparative example 3
Example 2 in CN 103374452A.
Performance testing
The lubricating oils prepared in the examples and comparative examples were tested for performance according to ASTM D130-2010 Standard test method for Corrosion on Petroleum products copper flakes.
Wherein, the copper sheet corrosion grade (160 ℃ 180 h): 1A, 1B, 2A, 2B, 2C, 2D, 2E, 3A, 3B, 3C, 3E, 4A, 4B, 4C. The corrosion grade of the copper sheet is less than or equal to 3C, and the copper sheet is qualified.
The copper dissolution amount (160 ℃ for 180 h) in the lubricating oil is less than or equal to 200ppm, which is qualified.
The results are shown in Table 5.
TABLE 5
Figure BDA0002584505430000082
Figure BDA0002584505430000091
The results in table 5 show that the lubricating oil for the hybrid reduction gearbox of the oil-cooled motor obtained in the embodiments 1 to 6 has excellent performance, low kinematic viscosity, good compatibility with copper parts and low metal corrosion, and meets the use requirements of the hybrid gearbox of the oil-cooled motor; and the actual blending operation is simple and convenient, and the method has wide application prospect. Of these, the compositions provided in examples 1-2 and examples 5-6 have the best overall properties.
Although the invention has been described in detail with respect to the general description and the specific embodiments thereof, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims (14)

1. The lubricating oil is characterized by comprising the following components in percentage by weight:
Figure FDA0003844514300000011
wherein the alkyl polysulfide is polyalkylbenzyl sulfide T324;
the phosphorus-containing antiwear agent is selected from zinc dialkyldithiophosphate T204, a combination of thiophosphate Irgalube353 and phosphite T304;
the hydrogenated base oil is a group III hydrogenated base oil; the synthetic oil is poly-alpha-olefin synthetic oil;
the viscosity index improver is polymethacrylate;
the lubricating oil is used for the oil-cooled motor hybrid power reduction gearbox.
2. The lubricating oil of claim 1, wherein the alkyl polysulfide is present in an amount of 1.6 to 2.5% by weight of the total amount of the lubricating oil.
3. The lubricating oil of claim 2, wherein the alkyl polysulfide is present in an amount of 1.6 to 2.0% by weight of the total amount of the lubricating oil.
4. The lubricating oil of claim 3, wherein the alkyl polysulfide is present in an amount of 1.8 to 2% by weight of the total mass of the lubricating oil.
5. The lubricating oil of claim 1 or 2, wherein the phosphorus-containing antiwear agent accounts for 1.3 to 1.7 percent of the total mass of the lubricating oil.
6. The lubricating oil of claim 5, wherein the phosphorus-containing antiwear agent comprises 1.3 to 1.5 percent of the total mass of the lubricating oil.
7. The lubricating oil of claim 5, wherein in the lubricating oil, the mass ratio of the poly (alkyl benzyl) sulfide T324 to the phosphorus-containing antiwear agent is (1.6-2.0): (1.3-1.7).
8. The lubricating oil of claim 7, wherein the mass ratio of the polyalkylbenzyl sulfide T324 to the phosphorus-containing antiwear agent in the lubricating oil is (1.8-2.0): (1.3-1.7).
9. The lubricating oil according to claim 7, wherein the mass ratio of the alkyl polysulfide to the zinc dialkyldithiophosphate T204, the phosphorothioate Irgalibe 353 and the phosphite T304 in the lubricating oil is (1.6 to 2.5): (0.7-0.9): (0.2-0.6): (0.2-0.4).
10. Lubricating oil according to claim 9, characterized in that the mass ratio of the alkyl polysulfide to the zinc dialkyldithiophosphate T204, the phosphorothioate irgaliube 353, and the phosphite T304 in the lubricating oil is (1.8 to 2.0): (0.7-0.9): (0.2-0.3): (0.2-0.4).
11. The lubricating oil of claim 9, wherein the pour point depressant is a polymethacrylate pour point depressant Vx-1-248;
and/or the detergent dispersant is boronized succinimide and/or synthetic calcium sulfonate;
and/or the antioxidant is dialkyl diphenylamine and/or a phenolic antioxidant.
12. The lubricating oil of claim 9, wherein the rust inhibitor is dodecenyl succinic acid and/or barium dinonylnaphthalenesulfonate;
and/or the metal deactivator is benzotriazole fatty amine salt;
and/or the antifoaming agent is polymethylsilicone oil and/or a copolymer of acrylate and ether.
13. The lubricating oil of claim 12, wherein the lubricating oil consists of the following components in percentage by weight:
Figure FDA0003844514300000021
Figure FDA0003844514300000031
14. the lubricating oil of claim 13, wherein the lubricating oil consists of the following components in weight percent:
Figure FDA0003844514300000032
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